6452491 has 4 divisors (see below), whose sum is σ = 6468984. Its totient is φ = 6436000.

The previous prime is 6452477. The next prime is 6452497. The reversal of 6452491 is 1942546.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1942546 = 2 ⋅971273.

It is a cyclic number.

It is not a de Polignac number, because 6452491 - 2⁷ = 6452363 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6452497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7645 + ... + 8446.

It is an arithmetic number, because the mean of its divisors is an integer number (1617246).

Almost surely, 2^6452491 is an apocalyptic number.

6452491 is a deficient number, since it is larger than the sum of its proper divisors (16493).

6452491 is a wasteful number, since it uses less digits than its factorization.

6452491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16492.

The product of its digits is 8640, while the sum is 31.

The square root of 6452491 is about 2540.1753876455. The cubic root of 6452491 is about 186.1697586875.

It can be divided in two parts, 645 and 2491, that added together give a square (3136 = 56²).

The spelling of 6452491 in words is "six million, four hundred fifty-two thousand, four hundred ninety-one".